Stitching mechanism for hat brims



July 17, 1923.

J. DENEMARK STITCHING MECHANISM FOR HAT BRIMS Filed June 25, 1921 2 Sheets-Sheet'l July 17, 1923. 1.462.168

- J. DENEMARK STIT CHING MECHANISM FOR HAT BRIMS I Filed June 25. 1921 -2 she ets-sheet 2- Patented July 17, 1923.

UNITED STATES 1,462,168 PATENT Fries.

JACOB DENEMARK, OF TRENTON, NEW JERSEY.

STITCHING MECHANISM FOR HAT BRIMS.

Application filed June 23, 1921. Serial No. 479,740.

in stitching mechanism for bat brims, one

of the objects being to provide an automatically fed carrier, arranged to hold the brim to be stitched and to feed same transversely of the feeding mechanism of a sewing machine. My improved stitching mech' anism is designed for use in connection with hat brims having stitching applied thereto in the form of a helix, that is to -say, the stitching is not appliedconcentricallywith respect to the outeredge of the brim or center of the hat, but rather eccentric thereto, the object being to apply a'continuous line of stitching throughout the brim. To accomplish this result, the stitching is started at a point at the edge of the brim and while the needle isoperating, the brim is fed 1 transversely of the feed dog of the sewing machine. This action results in a continuous line of stitching around the brim. lVhen' the needle reaches the inner edge of thebrim, the transverse feed ceases, but the brim is still fed longitudinally of the feed dog of the machine, withthe result that the last line of stitching is applied concentric to the inner edge of the brim. The eccentric stitchingis the resultof a transverse feed in combination with a longitudinal feed. My improved device is arranged to automatically accomplish the results mentioned.

I will now proceed to describe my invention in detail, the novel features of which I will point out in the appended claims, reference being had to the accompanying drawings, wherein Fig. 1 is a top plan viewof my device illustrated as attached to a sewing machine, only a portion of-a sewing machine being indicated;

Fig. 2 is an enlarged end View illustrating the mechanism for operating the lead screw, I only a portion of the operating gear being illustrated; I i

Fig, 3 is anenlarged sectional detail view, the section being taken on a line 33 in Fig. 2; i

Fig. 4 is an enlarged fragmentary detail view, illustrating the carrier for flat hat brims; I i I Fig. 5 is an enlarged sectional detail View, the section being taken on a line 5-5 in Fig. 4; a

Fig. 6 is an enlarged sectional detail view, the section being taken on a line 66 in F ig. .1;

Fig. 7 is an enlarged fragmentary detail view illustrating a portionof the lead screw and that portion ofv the carrier which supports the follower pin for engaging the lead screw;

Fig. 8-is a detail view of the adjustable member of the brim carrier; and I Figs. 9 and 10 are detail views of a carrier for dished hat briins.

In the drawing, a portion of a'sewing machine is indicated by 11, the only 7 parts which I have illustrated being the workplate 12, feed-dog 13, frame member 14 and operating pulley 15, said pulley being mounted on the shaft 16 which operates the feed dog 13 which is well known to those familiar with the sewing machine art. Y

- My improved device isdesigned to co operate with the stitching mechanism of a sewing machine and for that purpose. is preferably attached to the machine. In this instance the base '17 of the machine is secured to the base 18 of the attachment, gen erally indicated by 19. Myimproved attachment is made up of suitable supports 20 and 21 carried by the plate 18, the support 20 supporting a rotatable shaft 22 and a lead screw 23. The support 21 carries a guide 21 to slidably support a knock off or trip plate 24 which is adjustable longitudinally of the guide 21 and which is held in adjusted positions by a binding screw 25.. The trip plate 24 carries an arm 2 f? projecting therefrom to a point over the lead screw 23 and is designed to actuate a lever26 pivotally supported by a bracket 27 carriedby the slidable brim carrier frame 28. The carrier frame 28 is secured to a slide rest 29 which in turn engages the'guide 21*, said slide rest being moved longitudinally-of the guide by the lead screw 23 which cooperates with a follower pin 30 slidably support, ed by a guide 31 carried by the bracket 2? on the carrier frame 28. The follower. pin, at its upper end, engages a slot 32 in. the lever 26, and is raised by the-lever.. 26.and

lowered by a spring 33,- which at one end bears against guide 31 and at the other end against the nose-piece 34 of pin 30. The guide 31 is provided with an arcuate slot 35 within which a stud 36 carried by pin 30 operates. lVhen lever 26 is operated, by hand. to lower pin 30. the stud 36, during its course along slot 35, will turn pin 80 one quarter of a revolution, causing the pointed end 37 of nose piece 3 1 to engage the threads of the lead screw 23. When lever 26 is operated. by the trip plate arm 24 to raise the follower pin 30, the lever 26 will turn the pin to a position in line with the axis, of the lead screw, in which position it will be held until again needed. The spring 38 acts to hold the nose piece 34 in engagement with the leadscrew. To operate thelead screw, I provide one end of same with a ratchet wheel 38' and an oscillatory arm 39 which carries a pawl frd to engage ratchet 88. To operate arm 39, I provide shaft 2:2: with a gear 41 carrying a guide 42 slidably supporting a block as. The block-l3 is engaged by a stud 4%1 engaging one end of a link 45. the other end of said link being connected to arm 39 0n lead screw To actuate gear 11 and shaft 22 I provide the shaft 16 of the sewing machine with a gear 46 which meshes with gear d1 on shaft 22. When the sewing mechanism is in operation, shaft QQwill rotate, which action will, through the agency of the ratchet 38 and pawl 40, act to impart to the lead screw an intermittent step by step rotary movement. The extent at this rotary movement can be varied to suit the operator by adjusti g block 43 toward or away from the center of shaft 16.

The shaft 22, at its opposite end, carries a crank-arm 47 which is connected by a link 48 to beater or slack roducer 49 carried by the support 21. At each end the beater is pivotally connected to support 21. When shaft 22 is in motion, beater 19 will be oscillate'd. The function of the beater is to produce slack in a brim so that the said brim will not bind upon the rest 50 over which it passes during a feeding stroke. In Fig. 6 a hat brim is indicated by 51 and by dotted lines in Fig. 1, also by 51.

A brim to be stitched is carried by a box shaped carrier 52, mounted on frame 28. through which it passes. The boX or carrier is made up of (in this instance) two parts I 53 and 54, the part 54: being adjustable in order that brim's of different widths can be accommodated. The carrier part or member 53 is carried by a rail 55 "slidable a recess or slot 56 in the slide rest 29. The rail 55 is provided with openin s 57 to be engaged by a point 58 carried by a locking pin 59 which in turn is supported by aguide 60 carried by frame 28. The pin 59i's surrounded by a spring 61 which acts to force the pin 59 downwardly to maintain pin 59 in any one of the openings 57. The width of the bo'r: of carrier 52 can be varied by sliding the rail 55 in or out. \Vhen a desired adjustment is obtained, the point 58 will be caused to engage an opening 57 whereby the rail will be held fixed. When the machine is in operation, the feed dog 13 will feed the brim 51 in the direction of the arrow 62, Fig. 1, while the lead screw 23 will feed the carrier 52 and the brim 51 in the direction of the arrow 63. The feed imparted to the brim by dog 13 and the feed imparted to the brim by lead-screw 23 will be alternate The parts will be set so that when the dog 13 is operating to feed the brim, in the direction of arrow 62, the arm 39 will be moving toward the left in Fig. 2, in which case the pawl 40 will jump the teeth of the ratchet 38 and lead screw 23 will not operate. While the feed dog 13 is returning after feeding stroke the lead screw 23 will move the slide rest 29 in the direction of arrow as and hence also the brim carried by the carrier or box 52. When a brim is to be stitched its edge 6-1- will be located under the needle of the machine. After the machine has been started, a line of stitching will be appliedv to the brim extending from edge 64 toward the inner edge 65, the said line of stitching being eccentric to the edges of the brim. After the brim has been fedtoward the right in Fig. 1 to an extent to bring its edge 65 adjacent the needle, lever 26 will contact with trip arm 24 and the follower pin 30 will be raised causing it to be disengaged from the lead screw After the lead screw and follower pin have become disengaged, the transverse feeding of the hat brim will cease, but the feed dog 13 will continue to operate; hence the last line of stitching will be applied along'the inner edge 65 of the brim andconcentric therewith. The transverse feeding of the brim can be stopped at any time by raising lever 26 by hand. The trip 2'1 will be positioned to suit the width of the hat brim that is to say, to raise the follower pin when the needle reaches a point adjacent the inner edge of the hat brim. For stitching dished hat brims, I employ a carrier illustrated in Figs. 9 and 10, said carrier consisting of channeled holders 66 and 67 carried by a rail made in two adjustably connected parts 68 and 69, said holders being slidably connected by a bolt 70. It will be seen that the holders '66 and. 67 are angularly disposed relative to each other in order to maintain the dished efi'ect of the hat brim. To prevent backward movement of the lead screw when arm 39 is returning after an operating stroke, I provide the lead screw with a. ratchet 71 engaged-by a retainin'g pawl 72 carried by the support 2l. To hold the block 4-3 in an adjusted position, stud 44; will be screwed up tight.

hat brims. a lead screw to feed the carrier transversely of the direction of feed of the sewing machine feeding mechanism, means associated with the driving mechanism of the sewing machine to operate the lead screw, feeding means carried by the carrier to releasably engage the lead screw, and an adjustable trip to disengage the feeding means from the lead screw at a predetermined point inthe transverse movement of the carrier.

2. In combination with a sewing machine having a feeding mechanism, a. carrier for hat brims, means to feed the carriertransversely of the direction'of feed of the feed mechanism of the sewing machine from the outer edge toward the inner edge of the brim, and means to automatically arrest the transverse movement of the brim carrier when the inner edge of the brim has been brought to a position adjacent the needle of the sewing machine, after which the feeding mechanism of the sewing machine will act alone to feed the brim.

3. In combination with a sewing machine for hat brims having a feeding device to feed the brims in one direction, an auxiliary feedingdeviee to feed the brims, in a direction transversely of the direction imparted tothe brim by the feeding device of the sewing machine, and means to effect an alternate operation of said feeding devices.

4. In a stitching attachmentfor sewing machines, a support, a rotatable shaft carrled there-by, a lead screw also carried by the'support, means operated by the shaft to impart tothe lead screw a step by step rotary movement, a carrier for hat brims, feeding means carried by the carrier to re leasably engage the lead screw, and an ad justable trip arranged to automatically disengage the lead screw and feeding means.

5. In a stitching attachment for sewing machines, a support, a rotatable shaft car ried thereby, a lead screw also carried by the support, means operated by the shaft to impart to the lead screw a step by step rotary movement, a carrier for hat brirns, a vertically movable follower pin carried by the carrier to engage the lead screw, a lever carried by the carrier, said lever engaging the follower pin, and an adjustable trip arranged to contact with saidlever and move same to raise the follower pin out of engagement with the lead screw.

In testimony whereof I hereunto aflix my signature.

JACOB DENEMARK. 

